CN105207956A - Multi-service isolation real-time communication system and method for power terminal communication access network - Google Patents
Multi-service isolation real-time communication system and method for power terminal communication access network Download PDFInfo
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- CN105207956A CN105207956A CN201510644383.0A CN201510644383A CN105207956A CN 105207956 A CN105207956 A CN 105207956A CN 201510644383 A CN201510644383 A CN 201510644383A CN 105207956 A CN105207956 A CN 105207956A
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Abstract
The invention provides a multi-service isolation real-time communication system and method for a power terminal communication access network. The system comprises an optical line module, multiple optical distribution networks and multiple optical network units; the optical line module is provided with at least one PON interface, each PON interface is connected with the first optical distribution network, the optical distribution networks are connected in series, and each optical distribution network is connected with one corresponding optical network unit; each optical network unit is connected with multiple service terminal devices. According to the multi-service isolation real-time communication system and method for the power terminal communication access network, power system services with different power safety level requirements and isolation requirements can be loaded by the same communication system; through a logical identification time slot reusing mechanism and a logical identification time slot preemption mechanism, the requirements of the power system services for communication properties such as the timeliness and the bandwidth can be met, and therefore the timeliness of delay-sensitive services can be guaranteed on the full load or overload condition of the system.
Description
Technical field
The invention belongs to Computer Control Technology field, particularly relate to a kind of multi-service isolation real-time communication system and method for electric power terminal communication access net.
Background technology
The construction principle of current electric power system terminal communication Access Network is based on Fibre Optical Communication Technology, and wireless and power line carrier is important supplement.The power business of Access Network carrying comprises distribution, electricity consumption, distributed power source, the business such as to patrol and examine, because it has the feature such as service bandwidth, real-time, and electric power system has service security isolation requirement, so all need newly-built a set of service communication system for every type business at present, therefore operating cost is high, and difficult in maintenance.
Summary of the invention
In order to solve the problem, the object of the present invention is to provide a kind of multi-service isolation real-time communication system and method for electric power terminal communication access net.
In order to achieve the above object, the multi-service isolation real-time communication system of electric power terminal communication access net provided by the invention comprises: optical line modules, multiple Optical Distribution Network and multiple optical network unit, wherein: optical line modules is with at least one PON mouth, each PON mouth is connected with first Optical Distribution Network, multiple Optical Distribution Network is connected mutually, and the optical network unit that each Optical Distribution Network is corresponding with connects; Multiple stage service terminal equipment is connect under each optical network unit.
The implementation method of the multi-service isolation real-time communication system of electric power terminal communication access net provided by the invention comprises the following step carried out in order:
The power supply of step 1, connection native system, wait for optical network unit (ONU) registration after system stability, can see the information of multiple optical network unit in optical line modules side, optical line modules side carries out LLID, time slot allocation according to MPCP Multi-point Control Protocol to multiple optical network unit;
Step 2, multiple optical network unit are assigned with multiple time slot according to LLID, and system inserts empty slot, and empty slot is evenly distributed in sequence of time slots;
Step 3, according to optical network unit hang the kind of service terminal equipment, to corresponding PON mouth and optical network unit configuration logic mark L_SNN_n;
Step 4, configure in system optical network unit side priority with business, priority and logical identifier L_SNN_n one_to_one corresponding fall in system automatically, and define in operation system the accident possessing and seize authority;
Step 5, configured after, can check in system comprise optical network unit registration, LLID distribution, sub-logic port, time slot isolation link information;
The service priority of the multiple stage service terminal equipment connect under each optical network unit in multiple optical network units that step 6, setting optical line modules are hung under a certain PON mouth successively decreases, in proper communication situation, the time slot LLID that multiple stage service terminal equipment utilization uplink communication distributes to the optical network unit be connected according to priority takies successively;
After step 7, optical line modules receive the multiple business sent above by PON oral instructions, distinguish according to logical identifier L_SNN_n and directly undertaken mutual by backboard or upload;
Step 8, down going channel issue data foundation optical network unit corresponding LLID and logical identifier L_SNN_n, can realize the reliable communication of system bidirectional isolation.
The multi-service isolation real-time communication system of electric power terminal communication access net provided by the invention and the effect of method: the electric power EPON communication system of the multiple service supporting utilizing service identification time slot provided by the invention to isolate, can make different electric power safety class requirement, the power system service of insulation request is carried by same set of communication system; Utilize logical identifier time slot multiplexing mechanism of the present invention and logical identifier time slot preemption mechanism, the performance requirement that power system service communicates to real-time, bandwidth etc. can be ensured, thus make the real-time of delay sensitive business be fully loaded with in system or be guaranteed under overload situations.
Accompanying drawing explanation
Fig. 1 is business time-slot isolation link schematic diagram;
Fig. 2 is timeslot multiplex, preemption mechanism schematic diagram;
Fig. 3 is the multi-service isolation real-time communication system composition schematic diagram of electric power terminal communication access net provided by the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the multi-service isolation real-time communication system of electric power terminal communication access net provided by the invention and method are described in detail.
As shown in Figure 3, the multi-service isolation real-time communication system of electric power terminal communication access net provided by the invention comprises: optical line modules (OLT) 1, multiple Optical Distribution Network (ODN1-ODNn) 2 and multiple optical network unit (ONU1-ONUn) 3, wherein: optical line modules 1 is with at least one PON mouth, each PON mouth is connected with first Optical Distribution Network 2, multiple Optical Distribution Network 2 is connected mutually, and the optical network unit 3 that each Optical Distribution Network 2 is corresponding with connects; Each optical network unit connects multiple stage service terminal equipment 4 for 3 times.
Described optical network unit 3 is deployed in service terminal equipment 4 side, and service terminal equipment 4 is connected with optical network unit 3 by Ethernet interface; For ensureing the isolation of business, different service terminal equipment 4 connects from different Ethernet interfaces respectively, the sub-logic port of the Optical Distribution Network PON mouth of the corresponding optical network unit 3 of Ethernet interface that optical network unit 3 is different.The sub-logic port of Optical Distribution Network PON mouth of optical network unit 3 and the sub-logic port one_to_one corresponding of the PON mouth of optical line modules 1, and set up time slot isolation link, the time slot isolation link unified logical identifier L_SNN_n of sub-logic port and correspondence distinguishes, and each business realizes business isolation by the sub-logic port of the sub-logic port of optical network unit 3, time slot isolation link and optical line modules 1.
Described optical line modules 1 is according to the lower optical network unit 3 hung of MPCP Multi-point Control Protocol management, by regularly issuing empty window, optical line modules 1 waits for that optical network unit 3 is reached the standard grade and initiates authentication registration and bandwidth request etc., and be the time slot that optical network unit 3 distributes LLID and data feedback channel thereof, the optical network unit 3 after authentication registration need carry out data communication with optical line modules 1 in the time slot be assigned with.
As shown in Figure 2, native system is after adding sub-logic port, the design of time slot isolation link, still according to MPCP agreement, optical network unit 3 is managed, 1 LLID and 1 autonomous data feedback channel time slot is distributed to each optical network unit 3, and multiple empty slot is inserted in the time slot queue distributed, by the data feedback channel logical identifier timeslot multiplex distributed, data feedback channel time slot and empty slot are seized, with the demand of satisfied carrying multi-service, real-time Transmission.
The multiplexing autonomous data feedback channel time slot of multiple sub-logic port in described optical network unit 3/time slot isolation link, time slot allows a sub-logic port/time slot isolation link to occupy each time, utilize the time slot multiplexing mechanism that this logic-based identifies, the multi-service isolation bearing function based on a set of communication system can be realized.
Described optical network unit 3 is after the time slot being assigned to LLID and data feedback channel thereof, multiple sub-logic port in it/time slot isolation link according to optical network unit 3 network interface real-time, bandwidth requirement with business, carry out priority classification, priority and logical identifier L_SNN_n one_to_one corresponding, sub-logic port corresponding to each business/time slot isolation link is distributed the time slot right to use according to the priority of logical identifier L_SNN_n, i.e. the time slot multiplexing mechanism of logical identifier.
Described logical identifier time slot preemption mechanism, can solve the higher data of the real-time/bandwidth requirement such as the emergency information of electric power system low priority traffice, specific function requirement to the demand of the communication supports such as real-time.Logical identifier time slot is seized and is realized point two-stage: one-level: on optical network unit 3 data feedback channel logical identifier timeslot multiplex basis, the data feedback channel time slot of low priority traffice to optical network unit 3 is seized, after transfer of data completes, release time slot is seized, and low priority traffice is returned to data feedback channel logical identifier time slot multiplexing mechanism; Secondary: the low priority traffice of optical network unit 3 is seized communication system data feedback channel empty slot on this link, after transfer of data completes, release empty slot is seized, and low priority traffice is returned to the data feedback channel logical identifier time slot multiplexing mechanism of distribution network ONU.
The implementation method of the multi-service isolation real-time communication system of electric power terminal communication access net provided by the invention comprises the following step carried out in order:
The power supply of step 1, connection native system, wait for optical network unit 3 register and system stability after, can see the information of multiple optical network unit 3 in optical line modules 1 side, optical line modules 1 side carries out LLID, time slot allocation according to MPCP Multi-point Control Protocol to multiple optical network unit 3;
Step 2, multiple optical network unit 3 are assigned with multiple time slot according to LLID, band 4 optical network units 3 under such as a certain PON mouth, 4 optical network units 3 are assigned with 4 time slots according to LLID, system inserts empty slot, empty slot is evenly distributed in sequence of time slots, and the time slot distribution of empty slot and optical network unit 3 as shown in Figure 2;
Step 3, according to optical network unit 3 hang the kind of service terminal equipment 4, to corresponding PON mouth and optical network unit 3 configuration logic mark L_SNN_n, such as shown in Figure 1, the logical identifier of multiple optical network units 3 of PON1 mouth correspondence is respectively L_SN1_1, L_SN1_2 ... L_SN1_n; Optical network unit 3 side then corresponds to L_SN1_1, L_SN1_2 ... L_SN1_n;
Step 4, configure in system optical network unit 3 side priority with business, priority and logical identifier L_SNN_n one_to_one corresponding fall in system automatically, and define in operation system the accident possessing and seize authority;
Step 5, configured after, can check in system comprise optical network unit 3 registration, LLID distribution, sub-logic port, time slot isolation link information;
In multiple optical network units 3 that step 6, setting optical line modules 1 are hung under a certain PON mouth, the service priority of the multiple stage service terminal equipment 4 that each optical network unit connects for 3 times successively decreases, in proper communication situation, the time slot LLID of the optical network unit 3 that multiple stage service terminal equipment 4 utilizes uplink communication to distribute to be connected according to priority takies successively, such as shown in Figure 3, extension 4 optical network units 3 under the PON1 mouth of optical line modules 1, the service priority setting first to fourth service terminal equipment 4 of wherein first optical network unit, 3 times extensions successively decreases, in proper communication situation, the time slot LLID1 that first to fourth service terminal equipment 4 utilizes uplink communication to distribute to first optical network unit 3 according to priority takies successively, such as wherein the business of the 4th service terminal equipment 4 is the logic port (network interface) of L_SN1_4 by logical identifier on first optical network unit 3, the logical identifier that logical identifier link arrives PON1 mouth on optical line modules 1 is the logic port of L_SN1_4,
After step 7, optical line modules 1 receive the multiple business sent above by PON oral instructions, distinguish according to logical identifier L_SNN_n and directly undertaken mutual by backboard or upload;
Step 8, down going channel issue LLID and the logical identifier L_SNN_n of data foundation optical network unit 3 correspondence, can realize the reliable communication of system bidirectional isolation.
The above embodiment is only one embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as limiting the scope of the invention.The explanation of above embodiment just understands core concept of the present invention for helping.In sum, this description should not be construed as limitation of the present invention.For the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
The invention discloses one utilizes EPON (EPON) to realize multi-service isolation real-time communication system and the method for electric power terminal communication access net.The method utilizes the data feedback channel time slot assignment mechanism of EPON, isolate in conjunction with service identification, for different business message distributes the transmission channel exclusively enjoyed, achieve the multiple power business of carrying belt insulation request in same communication system, utilize data feedback channel timeslot multiplex and preemption mechanism simultaneously, high-priority service to be fully loaded with or real-time under overload situations is guaranteed in system, to meet QoS demand better.
Claims (2)
1. the multi-service isolation real-time communication system of an electric power terminal communication access net, it is characterized in that: described system comprises: optical line modules (1), multiple Optical Distribution Network (2) and multiple optical network unit (3), wherein: optical line modules (1) is with at least one PON mouth, each PON mouth is connected with first Optical Distribution Network (2), multiple Optical Distribution Network (2) is connected mutually, and the optical network unit (3) that each Optical Distribution Network (2) is corresponding with connects; Multiple stage service terminal equipment (4) is connect under each optical network unit (3).
2. an implementation method for the multi-service isolation real-time communication system of electric power terminal communication access net as claimed in claim 1, is characterized in that: described implementation method comprises the following step carried out in order:
The power supply of step 1, connection native system, wait for optical network unit (3) registration and system stability after, can see the information of multiple optical network unit (3) in optical line modules (1) side, optical line modules (1) side carries out LLID, time slot allocation according to MPCP Multi-point Control Protocol to multiple optical network unit (3);
Step 2, multiple optical network unit (3) are assigned with multiple time slot according to LLID, and system inserts empty slot, and empty slot is evenly distributed in sequence of time slots;
Step 3, according to optical network unit (3) hang the kind of service terminal equipment 4, to corresponding PON mouth and optical network unit (3) configuration logic mark L_SNN_n;
Step 4, configure in system optical network unit (3) side priority with business, priority and logical identifier L_SNN_n one_to_one corresponding fall in system automatically, and define in operation system the accident possessing and seize authority;
Step 5, configured after, can check in system comprise optical network unit (3) registration, LLID distribution, sub-logic port, time slot isolation link information;
The service priority of the multiple stage service terminal equipment (4) connect under each optical network unit (3) in the multiple optical network units (3) hung under step 6, the upper a certain PON mouth of setting optical line modules (1) successively decreases, in proper communication situation, the time slot LLID of the optical network unit (3) that multiple stage service terminal equipment (4) utilizes uplink communication to distribute to be connected according to priority takies successively;
After step 7, optical line modules (1) receive the multiple business sent above by PON oral instructions, distinguish according to logical identifier L_SNN_n and directly undertaken mutual by backboard or upload;
Step 8, down going channel issue data foundation optical network unit (3) corresponding LLID and logical identifier L_SNN_n, can realize the reliable communication of system bidirectional isolation.
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| CN111245527A (en) * | 2020-03-27 | 2020-06-05 | 四川虹美智能科技有限公司 | Performance detection system and detection method thereof |
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